Hertel K029055AS M6x1 Straight Flute Tap 4 Flutes Plug 6H

Product Description

The HERTEL K029055AS is a straight flute tap designed for cutting M6x1.00 metric coarse internal threads in a left-hand direction. Built from high-speed steel (HSS) with a bright, uncoated finish, this tap is suited for hand tapping and machine tapping applications where left-hand thread profiles are required. The plug chamfer — typically 3 to 5 threads — allows the tap to start easily in a through-hole or partially blind hole. With a D5 thread limit and a 6H class of fit, it produces threads to standard metric tolerance. Overall length is 2.5 inches. Machinists, tool and die makers, and maintenance technicians use this tap in both production and repair settings.

This tap is intended for threading ferrous and non-ferrous metals in applications that require left-hand metric threads — such as fastener retention features subject to rotational loosening or specialized mechanical assemblies. The straight flute design makes it well-suited for short-chipping materials. It is used in manual tap handles, tapping heads, and CNC tapping cycles where a left-hand M6x1.00 thread is specified.

Key Features

• Left-hand thread direction for applications requiring reverse-thread fastening
• Plug chamfer (3-5 thread lead) for easy starting in through-holes and shallow blind holes
• High-speed steel construction provides durability across a range of workpiece materials
• Bright, uncoated finish — suitable for use with cutting fluids on a wide range of materials
• 6H class of fit with D5 thread limit meets standard metric tolerance requirements
• 4 straight flutes for efficient chip clearance in short-chipping materials

Compatibility

Designed for cutting M6x1.00 metric coarse left-hand internal threads; compatible with standard straight-shank tap holders and tapping heads sized for the M6 tap body diameter.

Installation Notes

This tap should be installed by a qualified machinist or maintenance technician familiar with tapping operations and cutting tool safety. Ensure the workpiece is securely fixtured and the tap is aligned perpendicular to the hole before starting. Use an appropriate cutting fluid for the workpiece material to extend tool life and improve thread finish. Do not force the tap — back off periodically to break and clear chips, and reverse the tap fully before re-engaging to avoid breakage.